VDE-2021-030

Vulnerability from csaf_mbconnectlinegmbh - Published: 2022-09-07 10:48 - Updated: 2025-06-06 07:00
Summary
MB connect line: two vulnerabilities in mymbCONNECT24, mbCONNECT24 (Update A)
Notes
Summary: Two issues have been discovered in mymbCONNECT24 and mbCONNECT24 in all versionsincluding V2.8.0. Updated affected versions (and solution) due to incomplete fixes in previous versions
Remediation: CVE-2021-34575: Update to 2.9.0 CVE-2021-34574: Update to 2.12.1
CVE-2021-34574

In MB connect line mymbCONNECT24, mbCONNECT24 and Helmholz myREX24 and myREX24.virtual in all versions through v2.11.2 an authenticated attacker can change the password of his account into a new password that violates the password policy by intercepting and modifying the request that is send to the server.

4.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
CWE-669 - Incorrect Resource Transfer Between Spheres
Vendor Fix CVE-2021-34575: Update to 2.9.0 CVE-2021-34574: Update to 2.12.1
CVE-2021-34575

In MB connect line mymbCONNECT24, mbCONNECT24 in versions <= 2.8.0 an unauthenticated user can enumerate valid users by checking what kind of response the server sends.

7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CWE-203 - Observable Discrepancy
Vendor Fix CVE-2021-34575: Update to 2.9.0 CVE-2021-34574: Update to 2.12.1
References
Acknowledgments
CERT@VDE certvde.com
OTORIO
To clipboard 

{
  "document": {
    "acknowledgments": [
      {
        "organization": "CERT@VDE",
        "summary": "coordination",
        "urls": [
          "https://certvde.com"
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      },
      {
        "organization": "OTORIO",
        "summary": "reporting"
      }
    ],
    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "distribution": {
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        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
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    },
    "lang": "en-GB",
    "notes": [
      {
        "category": "summary",
        "text": "Two issues have been discovered in\u00a0mymbCONNECT24 and mbCONNECT24 in all versionsincluding V2.8.0.\n\nUpdated affected versions (and solution) due to incomplete fixes\u00a0in previous versions",
        "title": "Summary"
      },
      {
        "category": "description",
        "text": "CVE-2021-34575: Update to 2.9.0\n\nCVE-2021-34574: Update to 2.12.1",
        "title": "Remediation"
      }
    ],
    "publisher": {
      "category": "vendor",
      "contact_details": "security-team@mbconnectline.de",
      "name": "MB connect line GmbH",
      "namespace": "https://mbconnectline.com"
    },
    "references": [
      {
        "category": "self",
        "summary": "VDE-2021-030: MB connect line: two vulnerabilities in mymbCONNECT24, mbCONNECT24 (Update A) - HTML",
        "url": "https://certvde.com/en/advisories/VDE-2021-030/"
      },
      {
        "category": "self",
        "summary": "VDE-2021-030: MB connect line: two vulnerabilities in mymbCONNECT24, mbCONNECT24 (Update A) - CSAF",
        "url": "https://mbconnectline.csaf-tp.certvde.com/.well-known/csaf/white/2022/vde-2021-030.json"
      },
      {
        "category": "external",
        "summary": "Vendor PSIRT",
        "url": "https://mbconnectline.com"
      },
      {
        "category": "external",
        "summary": "CERT@VDE Security Advisories for MB connect line GmbH",
        "url": "https://certvde.com/en/advisories/vendor/mbconnectline/"
      }
    ],
    "title": "MB connect line: two vulnerabilities in mymbCONNECT24, mbCONNECT24 (Update A)",
    "tracking": {
      "aliases": [
        "VDE-2021-030"
      ],
      "current_release_date": "2025-06-06T07:00:00.000Z",
      "generator": {
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      "id": "VDE-2021-030",
      "initial_release_date": "2022-09-07T10:48:00.000Z",
      "revision_history": [
        {
          "date": "2022-09-07T10:48:00.000Z",
          "number": "1.0.0",
          "summary": "Initial revision."
        },
        {
          "date": "2022-09-07T14:00:00.000Z",
          "number": "1.1.0",
          "summary": "Update A"
        },
        {
          "date": "2025-06-06T07:00:00.000Z",
          "number": "1.2.0",
          "summary": "Fixed CVE-IDs in Solution/Remidiation"
        }
      ],
      "status": "final",
      "version": "1.2.0"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "branches": [
                  {
                    "category": "product_version_range",
                    "name": "\u003c=2.11.2",
                    "product": {
                      "name": "mbCONNECT24 \u003c=2.11.2",
                      "product_id": "CSAFPID-51001"
                    }
                  },
                  {
                    "category": "product_version",
                    "name": "2.12.1",
                    "product": {
                      "name": "mbCONNECT24 2.12.1",
                      "product_id": "CSAFPID-52001"
                    }
                  },
                  {
                    "category": "product_version",
                    "name": "2.9.0",
                    "product": {
                      "name": "MB connect line Software mbCONNECT24 2.9.0",
                      "product_id": "CSAFPID-52002"
                    }
                  }
                ],
                "category": "product_name",
                "name": "mbCONNECT24"
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              {
                "branches": [
                  {
                    "category": "product_version_range",
                    "name": "\u003c=2.11.2",
                    "product": {
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                      "product_id": "CSAFPID-51002"
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                  },
                  {
                    "category": "product_version",
                    "name": "2.12.1",
                    "product": {
                      "name": "mymbCONNECT24 2.12.1",
                      "product_id": "CSAFPID-52003"
                    }
                  },
                  {
                    "category": "product_version",
                    "name": "2.9.0",
                    "product": {
                      "name": "MB connect line Software mymbCONNECT24 2.9.0",
                      "product_id": "CSAFPID-52004"
                    }
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                "name": "mymbCONNECT24"
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        "product_ids": [
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          "CSAFPID-51002"
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      },
      {
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        "product_ids": [
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          "CSAFPID-52002",
          "CSAFPID-52003",
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      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2021-34574",
      "cwe": {
        "id": "CWE-669",
        "name": "Incorrect Resource Transfer Between Spheres"
      },
      "notes": [
        {
          "category": "description",
          "text": "In MB connect line mymbCONNECT24, mbCONNECT24 and Helmholz myREX24 and myREX24.virtual in all versions through v2.11.2 an authenticated attacker can change the password of his account into a new password that violates the password policy by intercepting and modifying the request that is send to the server.",
          "title": "Vulnerability Description"
        }
      ],
      "product_status": {
        "fixed": [
          "CSAFPID-52001",
          "CSAFPID-52003"
        ],
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          "CSAFPID-51002"
        ]
      },
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "CVE-2021-34575: Update to 2.9.0\n\nCVE-2021-34574: Update to 2.12.1",
          "group_ids": [
            "CSAFGID-0001"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 4.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "environmentalScore": 4.3,
            "environmentalSeverity": "MEDIUM",
            "integrityImpact": "LOW",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "temporalScore": 4.3,
            "temporalSeverity": "MEDIUM",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-51001",
            "CSAFPID-51002"
          ]
        }
      ],
      "title": "CVE-2021-34574"
    },
    {
      "cve": "CVE-2021-34575",
      "cwe": {
        "id": "CWE-203",
        "name": "Observable Discrepancy"
      },
      "notes": [
        {
          "category": "description",
          "text": "In MB connect line mymbCONNECT24, mbCONNECT24 in versions \u003c= 2.8.0 an unauthenticated user can enumerate valid users by checking what kind of response the server sends.",
          "title": "Vulnerability Description"
        }
      ],
      "product_status": {
        "fixed": [
          "CSAFPID-52002",
          "CSAFPID-52004"
        ],
        "known_affected": [
          "CSAFPID-51001",
          "CSAFPID-51002"
        ]
      },
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "CVE-2021-34575:\u00a0Update to 2.9.0\n\nCVE-2021-34574: Update to 2.12.1",
          "group_ids": [
            "CSAFGID-0001"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "environmentalScore": 7.5,
            "environmentalSeverity": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "temporalScore": 7.5,
            "temporalSeverity": "HIGH",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-51001",
            "CSAFPID-51002"
          ]
        }
      ],
      "title": "CVE-2021-34575"
    }
  ]
}


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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.